Tuesday, July 30, 2019

windows server 2012 r2 - Storage Spaces two-way mirror with odd number of disks

I am currently using storage spaces on Windows Server 2012 R2. 2 disks (2*3TB) are installed with one virtual volume set to two-way mirroring. Since this is a very small server, it only has one SATA port left. For increasing the storage capacity, I am thinking about adding 1 more drive, but this time with a capacity of 6TB. According to Mixing disks of different sizes in a Storage Spaces pool , one might think that a possible way would be to 1. remove one of the 3TB drives, 2. add the new 6TB drive, 3. rebuild the storage space, 4. format the old 3TB drive and then 5. add it again to the pool. Would I then be able to access 6TB of capacity and still have two-way mirroring resiliency? Can't find any documents that cover this scenario.

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